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Surfaces

This chapter covers Civil 3D Surface objects, and how to work with them using the Autodesk Civil 3D .NET API.

There are four classes of surface in Civil 3D:

  • TinSurface
  • GridSurface
  • TinVolumeSurface
  • GridVolumeSurface

The first two represent a single layer of terrain, while the second two represent a volume between two layers. All four derive from a generic Surface object, which exposes the common methods and properties shared by all surfaces.

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